Portable sound-localizer.



B. M. vSM'JLEIN.

PORTABLE sourm woman.- APPLICATION min ammo. \sn.

1,245,514. Patented'Nov. 6,1917. I

,ZeZle MAZZ/ez'zz TAT PORTABLE SOUND-LQCALIZER.

Specification of Letters Patent.

. Patented Nov. 6, 1917.

Application filed March 20, 1917. Serial No. 156,102.

To ll whom it may concern:

Be it known that l, BELLE M. SAHLEIN, a citizen of the United States,residing in the city and county of San Francisco and State ofCalifornia, have invented new and useful Improvements in PortableSound-Localizers, of which the following is a specification.

My invention relates to a means for localizing sounds and preventingtheir escape beyond the immediate region where they are produced. It isespecially designed for use in connection with telephones which may beestablished in offices, rooms, or departments of stores, where othernoises prevail, and where it is desirable to maintain secrecy in thetransmission of messages.

It consists of a portable cage, so constructed as to admit the head andshoulders of the operator, and of material which will so deaden thesound, that the voice of the operator, or the substance of what isconveyed by him cannot be understood.

Referring to the accompanying drawings for a more complete explanationof my invention- Figure 1 is a perspective, exterior view of the device.

Fig. 2 is a perspective view of the interior frame.

Fig. 3 is a fragment, showing the collapsing joint.

Fig. 4: is a perspective view of a non-collapsible cage.

In department stores there are frequently a number of distinctdepartments located near together and upon the same sales counter. Inoffices, also, it is often necessary to have communication through atelephone while other clients may be seated in the office, where it isdesirable that the visitors should not hear the conversation.

For this purpose it is desirable to have some means for preventing theescape of sound from the immediate neighborhood of the telephone. Such ameans I have provided in the form of collapsible cage A, which may bemade of any suitable light material, such as a wire frame of sufficientsize to admit the head and shoulders of an operator, and this frame maybe covered with felt, baize, or be provided with double walls of anysuitable deadening material. The cage may also be made entirely of feltor fiber material, of any suitable kind, which will prevent the escapeof sound. The device may be provided with celluloidor simi lartransparent openings at the side and front, as at 2, and the rearportion may be open and have a flexible curtain or curtains 3 sodisposed as to fall over the shoulders of the user, when in use.

This device is light and may be easily moved from one end of a desk tothe other, or from one desk to another; the telephone receiver beingconnected by a suitable cord which allows it to be moved around the roomor department where it is located. The cage will have a sufficientopening or means at 4 by which the cord can be passed into it with thereceiver and transmitter inside of the cage, so that it will be possibleto move the cage to any convenient or desired point within the room ordepartment, and connect the cord with the cage where the operator maythen conduct the conversation in such a manner that it will not beaudible from the outside.

In order to enable the cage to be collapsed into a small space, when notin use, the vertical rods 5 of the cage are jointed and have loops 6formed at the ends, each loop inclosing the straight part of itscompanion rod, upon which it is slidable to collapse the cage. A latchis formed upon one member to engage the other, so as to retain the cagein an extended condition.

Having thus described my invention, what I claim and desire to secure byLetters Patent is- 1. In a sound localizer for telephones, a frameincluding a lower section having a head receiving opening in its bottom,an upper section slidably connected to the lower section so as to becapable of moving vertically toward and away from the latter, means tohold the sections against collapsing, and a fabric covering extendingover the top of the upper section and over the sides of both sections,said covering having a back extension projecting below the frame bottomto engage over the shoulders of the user.

2. In a sound localizer for telephones, a frame including an upper and alower section each having vertical overlapping rods, each of said rodshaving an eye slidably re ceiving the rod of the other respectivesection latches carried by the rods of one section and engageable withthe eyes of the other section to hold the sections against sliding, anda covering for the sections.

In a sound localizer for telephones, a

Wire frame having a top, sides and an open In testimony whereof I havehereunto set bottom, the bottom Wire being arched upmy hand in thepresence of two subscribing 10 Wardly at the front thereof to admit there Witnesses.

ceiver and transmitter cords, and a covering T for the top, sides andfront of the frame, BELLE SAHLEIL said covering having an extension atthe Witnesses:

back of the frame projecting below the \V. \V. HEALEY,

frame bottom to engage over the shoulders. M. E. EWING.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C."

